Metal weather strip



April 10, 1934. Q Q BURCH 1,954 439 METAL WEATHER STRIP Filed March 1931 wil 3PM gvvuenloz Patented Apr. 10, 1934 UNITED STATES PATENT OFFICE 6 Claims.

My invention relates to improvements in metal weatherstrips and it is my object primarily to provide a Weatherstrip that will be of such a character that the same will more effectively exclude drafts and moisture than those heretofore used, one that will be extremely simple and economical to manufacture and which will be far more durable than the usual strip on the market.

It is also an object of my invention to so make a Weatherstrip that the same will be quite easily installed.

More specifically, it is my intention to make an all metal rigid Weatherstrip preferably composed of moulded or extruded metal that will result in a product having relatively thick rigid walls or marginal portions throughout, as distinguished from the sheet metal strips commonly used which are more or less resilient or flexible and have inherently thin walls or marginal portions which have a tendency to bend away from the surfaces to which they are supposed to closely lie.

In addition to the above, I intend to provide such a strip with integral projecting sharp points or marginal edges at various convenient portions thereof, whichpoints or sharpmargins are adapted to penetrate the wood of the frame or window sash, thereby facilitating installation of the strip and obviating the necessity of separate fastening devices.

It is also my intention to make a rigid metal Weatherstrip that will, when installed, present an unusually neat and attractive appearance which is not possible with the present type strip on the market.

With reference to the accompanying drawing, in which:

Fig. 1 is a sectional view showing the weatherstrip applied to a sliding window;

Fig. 2 is a perspective view of the channel portion of the strip that is attached to the sash; while Fig. 3 is a perspective view of the mating portion of the strip adapted to be attached to the window frame; the numeral A represents generally one part of the strip and B the mating or cooperating part thereof. These strips are made from a relatively thick rigid metal bar of preferably general rectangular formation indicated generally in Fig. 1 as distinguished from the ordinary sheet metal strip. I preferably use aluminum or brass given the desired shape by moulding or extruding, or similar methods. The solid upstanding portion C of the part 'B closely fits within the groove D formed in the part A but with sufficient clearance to permit easy sliding or relative movement therebetween when 'installed or assembled. The two cooperating parts are adapted to be installed one on the sash of a sliding window or closure and the other on the frame surrounding the same as is generally done in Weatherstripping. The part A is adapted to occupy a rabbeted part E of the sash and the part B having an extending edge F for entry into the parting bead G. This edge F is preferably beveled or sharpened so as to permit the same to be easily driven or forced into the parting bead. The part A has formed along its edges that lie along the upper corners of the rabbet upstanding sharp ribs or projections H which permit this part of the strip being easily installed or driven into the rabbet and these projections H serve as fastening means for this part of the strip, thereby firmly securing the same in place in the rabbet.

It will be noted that the part or member A has a downwardly extending outer marginal portion or flange K which lies flush with the outer edge or surface of the sash when the strip is installed, thereby materially improving the appearance of the strip and, due to the fact that the entire strip is of rigid comparatively thick metal, the flange or marginal portion K will be maintained flush with the sash at all times and will not become distorted or bent as would a flexible metal strip of the type heretofore used. This obviously not only adds materially to the appearance of the strip when properly installed but, due to the inflexible nature of the entire strip, in cooperation with the upstanding solid portion C of the part B, provides a non-flexible or non-distortable barrier adapted for close fitting and maintenance in straight lines, thereby creating a more efficient barrier to the entrance of air or moisture.

It will be readily realized that my improved strip can be extremely easily manufactured, there being no bending or distortion of the metal. All that is necessary to install the same in place, is the rabbeting out of part of the sash and then undercutting the portion L for the reception of the flange M so that the same will lie flush, then inserting the part A of the strip by applying pressure so that the sharp margins or projections H will penetrate the wood. It is to be further noted that all exterior walls of the part A are formed with the right angled corners, thereby closely fitting the walls of the rabbet and leaving no spacing for the seepage of air or moisture, and adding materially to the efiiciency of the work. The cooperating part B is simply laid along the frame in proximity to the parting strip or head and the edge F thereof forced into the same.

Obviously, additional fastening elements, such as nails X, can be used to insure additional stability although there is no necessity therefor in ordinary practice if the pointed projections are of suiflcient depth and properly positioned with respect to the body parts A and B. Also, if desired, the usual corrugated additional strip Y of sheet metal can be used in conjunction with the part B.

While I have described my strip as applied to an ordinary sliding window, quite apparently it can be used equally as Well on any closure or Wherever Weatherstripping is applied.

While I have illustrated and described a strip with the part A having outside walls with right angular corners, this can obviously be departed from and the same may vary to fit the contour of the type rabbet desired and may take the general outline of amore or less curved surface as long as the walls thereof fit closely the rabbet or groove and are comparatively thick and rigid as distinguished from flexible strips.

It will be noted that the member or strip B is provided with shoulders at its edge for the reception of the auxiliary corrugated strip Y to proper placing of the same and to properly place the strip B with respect to the parting bead and to limit the penetration of the edge F.

Having thus described my invention, what I claim is:

1. A rigid non-flexible metal Weatherstrip for sliding windows comprising two cooperating strips, one adapted to be attached to the sash and being formed with agroove moulded therein, the other adapted to be attached to the frame, said last mentioned strip being provided with an integral solid upstanding flange for longitudinally sliding engagement with the groove.

2. A metal Weatherstrip for sliding windows comprising a metal strip having a groove formed therein adapted to be secured to a rabbet in one edge of the sash and a cooperating metal strip having a solid upstanding flange for engagement with the groove and adapted to be secured to the frame.

3. A metal Weatherstrip for windows, comprising a rigid metal strip formed with a groove therein adapted to be secured to a rabbet in a sash so that the outer walls of the strip lie flush with the walls of the rabbet throughout their contacting surfaces, the strip being formed with integral fastening marginal portions and an oifset flange, a cooperating rigid solid metal strip formed with a base portion and an integral solid upstanding flange for engagement with the groove in the first mentioned strip, the edges of the base being pointed for penetration into an adjacent part of a window frame.

4. A Weatherstrip for sliding windows, comprising a rigid solid metal strip of general rectangular formation with an offset flange and provided with a groove in the main body portion thereof, which strip is adapted to closely fit and be secured in a rabbet in a window sash with the oifset flange lying flush with the side of the sash and extending downwardly to the edge thereof and a cooperating rigid solid metal strip adapted to be attached to a window frame and formed with a flat base portion and having a solid upstanding flange for engagement with the groove in the first mentioned strip.

5. A Weatherstrip for sliding windows, comprising a rigid solid metal strip of general rectangular formation with an offset flange and provided with a groove in the main body portion thereof, which strip is adapted to closely lit and be secured in a rabbet in a window sash with the offset flange lying flush with the side of the sash and extending downwardly to the edge thereof and a cooperating rigid solid metal strip adapted to be attached to a window frame and. formed with a fiat base portion and having a solid upstanding flange 

